private void button42_Click(object sender, EventArgs e)

        {

            Dictionary<int, string> proxyIpNodes = new Dictionary<int, string>();

            proxyIpNodes.Add(, "XINNIU_IP_PROXY:XINNIU_IP_PROXY_POOL5");

            proxyIpNodes.Add(, "XINNIU_IP_PROXY:XINNIU_IP_PROXY_POOL3");

            var ip = textBox5.Text;

            var iphashcode = ip.GetHashCode();

            if (iphashcode < ) iphashcode = -iphashcode;

            int serverListSize = proxyIpNodes.Count;

            int serverPos = iphashcode % serverListSize;

            textBox6.AppendText(proxyIpNodes[serverPos+]+ System.Environment.NewLine);

        }